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@time @imita HUGH H. GRAIGIE, OF- NEW YORK, N. Y.

Letters Patent No. 103,721, dated .2l/[ay 31, 1870.

IMPROVEMENT IIN' WATER-CLOSET VALVES.

The Schedule referred to in these Letters Patent and making part of thesame.

To all 'whom it may concern Beit known that I, HUGH H. GRAIGIE, of thecity and State of New York, have invented and made a new and usefulVImprovement ,in Cocks for Water- Oiosets and the following is herebydeclared to be a full and clearjdeseription of the same.

Valves for water-closets have before been made in which a piston hasbeen applied in a chamber into which water is allowed to leak graduallyas the valve is closed, and a secondary valve has been applied to allowthe water to rush freely into this chamber, as in Letters Patent No.84,262, rranted to me.

My invention relates to a valve-seat with a groove -in it, applied incombination with a valve, a piston,

and the said chamber and valve to the waterfcloset, whereby the saidgroove forms 'the leakage water-way for the gradual filling or emptyingof the said chamber, and, when the piston is moved in the otherdirection, the valve and grooved seat separate so as to allow the rushof water to keep the said groove free from obstruction by washing thesame out at a time when t-he parts are open, and any. obstruction thatmight have-passed into the groove is relieved.

By this means, the groove does not become filled with any obstructions,such as sand, dirt, 85e., which frequently exist in the water andobstruct the valves heretofore employed.

In the drawing-,

Figure 1 is a vertical sectionv of the cock or valve complete,l andFigure 2 is a plan of the valve-seat and groove at the line x x.

The inlet-pipe is connected, at a, to the hub projecting from the'caseof the valve, and

b is the'hub to which the pipe to the water-closet is attached.

The valve-seat c is placed, as usual, between the inlet and outletwater-ways, and I have shown a'leather lace vto said seat,'held down bya ring, d, as in my Y patent No. 89,856.

lhe valve e, on the stern f, is fitted with the plug to close the seatc, as in said patent No. 89,856.

Upon the stem f is the piston g, and there is a' slight end play of thestem f through the piston g,

the extent of motion being limited by the -shoulder 2 and nut t.

The piston g is in the variable chamber h, and the valve is pressed uponits seat by the spring It,

The portion of the stem f that passes through the pistoag fits the same'loosely, or portions are filed olf to form water-ways, as seen at 3 3,and the lower edge of the hub of the piston, next the shoulder 2, is.also notched to form openings for the water.

Tile surface of the piston y, next the nut i, and the under surface ofsaid nut, forma valve and seat, in one of which is a groove, 6. l haveshown said groove as in the piston g; and thel operation ofthe parts isas follows:

lVhen the valve-stem f is pressed endwise against the spring k, there isa free. water-way between the valve t' and its seat, on g, and waterpasses through the ways 3, in-order that the water contained in thevariable chamber It mayvnot obstruct the opening of mences to close inthe direction ofthe arrow, the seat on g closes against t', and watercannot pass into that part of the chamber h above the piston g, exceptthrough the groove 6, and thus the valve can only close at a certa-inspeed, according to the relative proportion of the jet going throughthis groove and the chamber h, to'be supplied as the valve and pistoumove.

If any obstruction gets into this groove, it is freed and washed outwhen the valve is being opened. j

I do not claim a valve with a groove in the seat, placed in the stem ofthe water-closet cock.

What I claim as my invent-ion is- 'lhe stern f, having an end movementthrough the piston g, and a water-way, 3, between the stem and piston,in combination with the nut fi, forming a valve,

and the groove 6, for a water leakage, asand for the purposes setfort-h.

Signed this 10th day of' November, A. D. 1869.

4 H. H. CRAlGIE. Witnesses:

HAROLD SERRELL, Guo. T. PINGKNEY.

